Method for recovering active metal of lithium secondary battery
AssigneeSK Innovation Co., Ltd.
InventorsHyeon Bae Ha, Ji Min Kim, Sung Real Son, Hyeon Jung Kim, Min Ji Sung
Life of this patent
Estimating the term…
Abstract
In a method for recovering an active metal of a lithium secondary battery, a preliminary cathode active material mixture is prepared from a cathode of a waste lithium secondary battery, the preliminary cathode active material mixture is fluidized through oxygen-containing gas within a fluidized bed reactor to form a cathode active material mixture, reductive gas is injected into the fluidized bed reactor to form a preliminary precursor mixture from the cathode active material mixture, and a lithium precursor is recovered from the preliminary precursor mixture.
Claims18
A method for recovering an active metal of a lithium secondary battery, the method comprising:
- preparing a preliminary cathode active material mixture from a cathode of a waste lithium secondary battery;
- fluidizing the preliminary cathode active material mixture by an oxygen-containing gas in a fluidized bed reactor to form a cathode active material mixture;
- forming a preliminary precursor mixture from the cathode active material mixture by injecting a reductive gas into the fluidized bed reactor;
- and
- recovering a lithium precursor from the preliminary precursor mixture.
Dependencies are inferred from the claim text.